Motion Sickness

Definition

Motion sickness is characterized by the symptoms of nausea and vomiting. Nausea and vomiting can be caused by motion itself or simply from feeling the sensation of motion, as when watching a movie or playing a video game.

Causes

Balance and equilibrium are maintained by an interaction among the inner ears, the eyes, pressure receptors on the skin, and motion receptors in the muscles and joints.

Motion sickness results when conflicting messages regarding spatial orientation and motion of the body are sent to the central nervous system. For example, reading a book while riding in a car may cause your eyes to send different messages than your inner ears do regarding motion.

Diagnosis

Your doctor will ask about your symptoms and medical history. A physical exam will be done.

Treatment

Symptoms of motion sickness usually go away soon after the motion stops. But, for some people, the symptoms can last a day or more. The main treatment for motion sickness is rest.

To help control vomiting, medications may be given rectally or through an IV. If motion sickness lasts a long time, fluids may be given in order to prevent
dehydration.

Prevention

Strategies to prevent motion sickness include:

Medications

Medication that prevent motion sickness should be taken as directed before you begin a trip or ride. These medications can cause side effects, such as drowsiness, lack of alertness, or trouble concentrating.

Medications include:

Over-the-counter antihistamines

Prescription scopolamine

Prochlorperazine, promethazine, or chlorpromazine

Repeated Exposure

Repeated exposure to the motion that causes the sickness can decrease your symptoms. This treatment can take time and may be unpleasant.

Revision Information

This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.